**Name:**

ac_generator - provides AC input current

**Description:**

This device produce an ac-current which are sent by a CurrentEvent. The

current is given by

I(t) = offset + amplitude * sin ( om * t + phi )

where

om = 2 * pi * frequency

phi = phase / 180 * pi

The parameters are

amplitude double - Amplitude of sine current in pA

offset double - Constant amplitude offset in pA

frequency double - Frequency in Hz

phase double - Phase of sine current (0-360 deg)

Setting start and stop (see StimulatingDevice) only windows the current

as defined above. It does not shift the time axis.

**Sends:**

CurrentEvent

**References:**

[1] S. Rotter and M. Diesmann, Exact digital simulation of time-

invariant linear systems with applications to neuronal modeling,

Biol. Cybern. 81, 381-402 (1999)

**Author:**

Johan Hake, Spring 2003

**SeeAlso:**

**Source:**

/home/graber/work-nest/nest-git/nest-simulator/models/ac_generator.h